Investigation of the Li0.03Na0.97TaуNb1-уO3 Solid Solution Structure and Properties by X-ray Analysis and Raman Spectroscopy

Sidorov, N. V.; Palatnikov, M. N.; Teplyakova, N. А.; Obryadina, E. Yu.; Алешина, Л. А.; Feklistova, E. P.

doi:10.15393/j8.art.2013.3004

Cited by 1 publication

(2 citation statements)

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“…This sample is the only one among studied with a high enough electrical conductivity (figure 4). Comparison of electrical conductivity and activation enthalpy data we can conclude that this studied SS goes into a state of superionic conduction, which correlates with the data in [3,4].…”

Section: Resultssupporting

confidence: 86%

“…The structure consists of distinctly faceted isomorphic grains of three-, four-and six-sided grains. The external habit of individual grains is determined by the presence of metastable morphotropic rhombic phases of different symmetries(P (Pbcm) and R (Pcmn)) and their possibility to irreversibly transit to a stable rhombohedral modification Rh with a symmetry (R3c) [3]. The size composition of samples grain are demonstrated on corresponding differential curves of sizes distributions (additions on figures 1 a, b, c, corresponding).…”

Section: Resultsmentioning

confidence: 99%

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Electrical Conductivity and Phase Transitions in Ferroelectric Solid Solutions Li0.17Na0.83ТауNb1-уO3 (y = 0 – 0.5) in High Pressure

Ефремов¹,

Палатников²,

Radyush³

et al. 2020

SSP

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Ferroelectric ceramic solid solutions LixNa1-xTayNb1-yO3 (х = 0.17; у = 0 – 0.5) with the perovskite structure have been obtained by the thermobaric synthesis method. Particularities of their microstructure, elastic properties, electrical conductivity and permittivity have been researched. It has been established that an increase in the thermobaric synthesis temperature leads to a decrease in the Young’s modulus value. Specific static conductivity values have been determined; charge carrier activation enthalpies На have been calculated. The Curie temperature of the samples has been determined to decrease with an increase in tantalum content. A Ferroelectric ceramic solid solution Li0.17Na0.83Ta0.1Nb0.9O3 was shown to undergo four structure phase transitions in the temperature range 300-820 К. A Li0.17Na0.83Ta0.1Nb0.9O3 has been shown to be a high temperature superionic. Possible mechanisms of the detected phenomena are discussed.

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